<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	public function authenticate()
	{
//		$users=array(
//			// username => password
//			'demo'=>'demo',
//			'admin'=>'admin',
//		);
//		if(!isset($users[$this->username]))
//			$this->errorCode=self::ERROR_USERNAME_INVALID;
//		elseif($users[$this->username]!==$this->password)
//			$this->errorCode=self::ERROR_PASSWORD_INVALID;
//		else
//			$this->errorCode=self::ERROR_NONE;
//		return !$this->errorCode;
		$user_model = Manager::model()->find('mg_name=:name',array(':name'=>$this->username));
		if($user_model === null){
			//用户不存在
			$this ->errorCode = self::ERROR_USERNAME_INVALID;
			return false;
		}else if($user_model->mg_pwd!==$this->password){
			//数据库密码！== 输入密码
			$this->errorCode=self::ERROR_PASSWORD_INVALID;
			return false;
		}else{
			$this->errorCode=self::ERROR_NONE;
			return true;
		}
	}
}